Rocking-chair attachment



(No Model.)

' W. I. BUNKER.

ROCKING CHAIR ATTACHMENT.

Patented May 7, 1889L 17726726??? 2555mm LBWJPW,

NITED STATES PATENT OFFICE.

WILLIAM I. BUNKER, OF CHICAGO, ILLINOIS.

ROCKING-CHAIR ATTACHMENT.

SPECIFICATION forming part of'Letters iatent 1%. 402,802, dated May '7, 1889.

Original application filed \Tune 28, 1887, Serial No. 242,797. Divided and this application filed October 2, 1888, Serial No.

237,027- (N0 model.)

To all whom it may concern:

Be it known that 1, WILLIAM I. BUNKER, a citizen of the United States, residing at Chicago, Illinois, have invented certain new and useful Improvements in Rocking-Chair Attachments, of which the following is a divisional specification of an application, Serial No. 242,797, filed by me June 28, 1887, for an improvement in rocking-chair attachments.

In the accompanying drawings, Figure 1 is a sectional elevation of one of the rockers and base-rails of a platform rocking-chair, showing my improved attachment secured to the inside thereof, the upwardly and downwardly projecting wires of the spring being inside of its coils. Fig. 2 is a section taken in line 2 2 of Fig. 1; and Fig. 3 the same, showing the downwardly and upwardly projecting portions of the wires outside of the coils.

A is the rocker; B, the base-rail; O, the connecting-spring; 0, extended end portions thereof; D, staples, plates, or brackets for securing the same to the rocker and base-rail.

In constructing my improved attachment I make an open coiled spring of suitable dimensions and length, but preferably about two and ahalf inches long and substantially the same or a little less in diameter, the end portions of the wire being bent and extending upwardly and downwardly inside or outside the body of the coils. These end portions are so bent as to be easily attached to the rocker and base-rail by staples or other suitable attaching devices. The one extending upwardly from the lower end of the spring is adapted to be attached to the rocker and the one extending downwardly from the upper end of the spring to the base-rail.

In operation, the end portion extending upwardly from the bottom of the spring being secured to the rocker and the end portion extending downwardly from the top of the spring to the base-rail, the rocking movements of the chair-seat causes the spring to be shortened by the compressing together of its coils, so that instead of being extended, as in the case of most springs used in connection with rocking-chairs, it is compressed and shortened by the movements of the chairseat, and thus made to hold the chair-seat in position and at the same time to operate as a stop, by the coming together of its coils, to limit its backward and forward movements.

As shown in the drawings, each of the extending end portions of the wire is bent and inserted directly into the wooden rocker and base-rail, and a staple is driven in at a suitable point to permanently and securely fasten it thereto.

What I regard as new, and desire to secure by Letters Patent, is-

In combination with the rocker and baserail of a platform rocking-chair, a compressible connecting spiral spring having the end portion of its wire at the bottom extending upwardly and the end portion of its wire at the top extending downwardly, and the extend ing end portions bent at right angles to and inserted in the rocker and base-rail and held by staples or similar fasteners, substantially 'lMoMAs A. BANNING, HATTIE A. FARNHAM. 

